Question 1095664
.
<pre>
The three roots are 1+i, 1-i, and -10.  Then the polynomial is

{{{(x-(1+i))(x-(1-i))(x-(-10))}}}

{{{((x-1)-i)((x-1)+i)(x+10)}}}

{{{(x^2-2x+1+1)(x+10)}}}

{{{(x^2-2x+2)(x+10)}}}

{{{x^3 + 10x^2 - 2x^2 - 20x + 2x + 20}}}

{{{x^3 + 8x^2 - 18x + 20}}}
</pre>